I can’t really see the image clearly, but this is about what I would expect. Any tech will tell you a wired connection is always superior to a wireless one. It’s more reliable, more stable, faster and more secure. The only thing wireless has going for it is convenience.
Why? Well, there is a lot going on in wireless that doesn’t happen with wires. Not only must the packets be reformatted moving from one to the other but wireless also has to encrypt the traffic at one end and decrypt it again at the other for security reasons. This, of course, takes a little bit more time. Wires generally don’t use encryption. Wireless is also a half-duplex system. That is, it can’t transmit and receive simultaneously because when sending it is so loud it can’t hear anything else. It sends a bit then listens for a reply etc. It also has to wait if another wireless device is sending. Twisted pair cable sends and receives simultaneously, using different wires. There is also the potential of interference from other radio signals. This scrambles the packets and so they need to be sent again, taking more time. I could go on but I think you get the idea.
